Thompson Street Capital Manager LLC

Buyout firmClassification probableMiddle marketSEC registered investment adviser· St. Louis, MOTSCP.COM

St. Louis-based private equity firm focused on founder-led middle-market businesses. See our portfolio companies.

Regulatory AUM
$4.6B
PE fund assets
$4.6B
PE funds
10
Investments held
82 of 261
Deals, last 12 months
20
As of · identity and classification; each section below carries its own date

66 additional team members, 48 additional counterparties and placement agents, 282 additional funds, deals and LP commitments, 55 events

Every relationship, signal and contact on this record, with the source on each.

Includes 3 days of DFX Intelligence. Then $199/month unless canceled.

Nothing material in the last 180 days. Last change: 31 Mar 2026, Private equity funds on its Form ADV went from 7 to 10 (+3).

People to know

View all people
  • Managing Partner
    Why: Managing partner: runs the firm
    Profile
  • co-founder and Managing Principal
    Why: Founder of the firm
    Profile
  • Managing Director
    Why: Managing director
    Profile

Capital path

who backs this record, through what, into what; each name opens its own path
Thompson Street Capital Manager LLC
Lenders and advisers
  • Sidley Austin LLPlegal adviser, 4 shared
  • Park Hill Group LLCplacement agent, 4 shared
  • Paul Giannamorefinancial adviser, 3 shared
All 49

Relationship network

478 connected entities219 observed deals20 repeat counterparties28 dated deals shown here, 2004 to 2026

From announced deals and their parties, Form ADV and Form D filings, the firm's funds and team, and disclosed LP commitments in the private equity graph. Dollar figures appear only where a source disclosed one.

Some relationships on this record are counted rather than named here. They open with the full profile.

Click any name or line for the deals and sources behind it. Line weight is deals together; dashed lines are inferred.

Reading the network
  • Company
  • Service provider
  • Capital provider
  • Fund or vehicle
  • Person
›How strength and recency are read

Strength is read from the deals: three or more is a strong observed relationship, two a repeat counterparty, one a single interaction. People and vehicles are structural. Nothing is scored that a reader cannot check.

Darker lines were active in the last 24 months or are current; lighter lines are older or undated.

Classification, Form ADV and stated criteria

How this organization is classified, and on what basisBuyout firm · 2 in historyShow
Class
Buyout firmprobable, confidence 80%
Basis
Own website statement
Size band
Middle marketdefined by: proxy: $4.90bn Private Equity Fund GAV on the Form ADV filed 2024-09-06
Strategies
Secondaries
Classification history (2)
  1. Sep 13, 2026
    Buyout firm (probable, 80%)
    Own website statement
    “Thompson Street Capital Partners (“TSCP”) is a middle-market private equity firm that helps transform already-exceptional businesses into market leaders.”
    tscp.com
  2. Sep 13, 2026
    Buyout firm (confirmed, 85%)
    8 of 8 distinct vehicles are sworn Private Equity Funds; 7 reported gross assets on a filing in 2022 or later
Regulatory footprint (Form ADV)RAUM $4.6B · 10 PE funds · filed Mar 31, 2026Show
Adviser type
Registered investment adviser
Form ADV filings
Feb 13, 2012 to Mar 31, 2026
RAUM
$4.6Bregulatory assets under management of the adviser; not dry powder, not a fund size
PE funds, latest filing
10
PE fund GAV, latest filing
$4.6Breported gross assets (Form ADV), not fund size
All private fund GAV
$4.6Bevery private fund type, latest filing
2024 PE fund GAV
$4.6Bsum over funds typed Private Equity Fund with a 2024 or later as-of date
PE share of funds, lifetime
100%
Fund type mix
  • Private equity fund: 10 funds, $4.6B reported gross assets, 11 ever reported
Form ADV filed Mar 31, 2026
Employees
53
Headquarters
St. Louis, MO
Stated criteria beside observed behaviour5 of 8 criteria stated · 243 observed dealsShow
Stated by the firm
Sectors
Healthcare, life sciences, technology, software, consumer
Geography
North America, Europe, Global
Revenue
not stated or not yet read
EBITDA
not stated or not yet read
Enterprise value
$50.0M to $500M
Equity check
$50.0M to $500M
Control
not stated or not yet read
Thesis
We seek partnerships where our robust in-house portfolio support capabilities can truly add value for management teams.
Observed from deals on record
On record
243 companies, 261 holdings, 207 transactions
Period
2004 to 2026 (421 dated observations, 47 holdings undated)
Most deals
Industrial services (40 of 243, e.g. Arrow Pest Control and Sasquatch Pest Control Assets), software (20 of 243), tech enabled services (13 of 243) and 5 more
Subsectors
Pest control (19 of 243), software (19 of 243), testing laboratories inspection (11 of 243), miscellaneous manufacturing (9 of 243) and 4 more
Deal roles
79 platforms, 143 add-ons, 39 with role not stated
Add-ons per platform
1.81 add-ons per platform
Control
198 control, 63 not stated
Holding period
median 3.2 years across 7 exits
Where
In (8 of 243), md (5 of 243), sc (5 of 243), mi (4 of 243), il (4 of 243) and 3 more
Bought from
10 founder, 5 family, 5 sponsor, 1 corporate parent
By year
2004: 2 platforms; 2005: 1 add-on; 2007: 1 platform; 2009: 1 other deal; 2010: 2 other deals; 2012: 2 platforms; 2013: 3 platforms, 2 add-ons; 2014: 1 platform, 7 add-ons, 1 other deal; 2015: 4 platforms, 10 add-ons; 2016: 2 platforms, 9 add-ons, 5 other deals; 2017: 4 platforms, 12 add-ons, 2 other deals; 2018: 2 platforms, 19 add-ons, 1 other deal; 2019: 4 platforms, 13 add-ons; 2020: 3 platforms, 3 add-ons, 2 other deals; 2021: 8 platforms, 11 add-ons, 1 other deal; 2022: 1 platform, 14 add-ons, 2 other deals; 2023: 2 platforms, 9 add-ons, 2 other deals; 2024: 10 add-ons, 3 other deals; 2025: 3 platforms, 10 add-ons, 1 exit; 2026: 3 platforms, 8 add-ons, 1 other deal
Repeat counterparties
Sidley Austin LLP (legal adviser) on 4 deals, a legal adviser on 3 deals, a financial adviser on 2 deals, Paul Giannamore (sell-side adviser) on 2 deals and 1 more

243 companies on the graph (207 transactions); most in industrial services (40); 79 platforms and 143 add-ons; median observed hold 3.2 years (7 exits); observed 2004 to 2026

Funds

10 families, 12 vehicles on record

Decision makers

who to call first, and why; then everyone else by function
  • Bob Dunn · Managing Partner
    Why this person: Managing partner: runs the firm; Named with investment responsibility; Confirmed current on the firm's own site 2026-10-02
    LinkedIn or profile link on file (firm website), confirmed 2026-09-21, confidence 90%
  • Jim Cooper · co-founder and Managing Principal
    Why this person: Founder of the firm; Named with investment responsibility; Confirmed current on the firm's own site 2026-10-02
    LinkedIn or profile link on file (firm website), confirmed 2026-09-21, confidence 90%
  • Alex Mace · Managing Director
    Why this person: Managing director; Named with investment responsibility; Confirmed current on the firm's own site 2026-10-02
    LinkedIn or profile link on file (firm website), confirmed 2026-09-13, confidence 90%

Ranked by the role the firm or its filing states, a route on file and deals led. Every reason is read from the record, never inferred. 3 with a route on file. Routes are published by the person or the firm (their bio, the team page or a filing) and are revealed on a plan; data bought from a provider is never shown, and a route printed at a firm the person has since left is held back.

Team

66 current, 0 former, 3 not confirmed current

Deals

271 on record, newest first · 79 platforms · 143 add-ons
DateCompanyDealThis firm’s roleStatusPartnerSource
Sep 17, 2026Braille Works
add-on to Allyant
Add-on acquisitionSponsor (confirmed)active
held 1 month
Craig Albrecht (confirmed)prnewswire.com
Aug 24, 2026AuditMate
add-on to ATIS
Add-on acquisitionSponsor (confirmed)active
held 1 month
unknowntscp.com
Aug 5, 2026Buckley Belcher & Company, LLCPlatform acquisitionSponsor (confirmed)active
held 2 months
unknowntscp.com

Portfolio credit

5 of 9 portfolio companies on BDC schedules at Jun 30, 2026
On BDC schedules
5 of 9 linked
at Jun 30, 2026
Principal held
$194M
13 lenders
Weighted mark
100.5
unchanged on the quarter, same 4
Non-accrual now
0
0 placed at Jun 30, 2026
Marked down
0
2 pts or more on the quarter
Maturing in 12 months
0
none stated
What the filings say
  • 5 portfolio companies on a BDC schedule at Jun 30, 2026: 0 with ownership stated current, 5 listed on a portfolio page with no date or status.
  • Lenders mark them at 100.5 on cost, weighted by principal (4 borrowers with a mark inside the plausible band).
  • On the 4 borrowers marked at both Mar 31, 2026 and Jun 30, 2026, the weighted mark moved 0 points; 0 fell 2 points or more and 0 rose 2 points or more.
Ask DFX about this sponsor’s credit
Following sends lender mark changes and non-accrual on these companies to your digest.
Show the credit outlook: 5 borrowers, 13 lenders, 8 quartersas of Jun 30, 2026

5 borrowers are in every figure above and named with Private Credit Intelligence.

Who lends to them, at Jun 30, 2026

    13 lenders are counted here and named with Private Credit Intelligence.

    The same portfolio companies, eight quarter ends back
    Quarter endHeldPrincipalMarkNon-accrual placedPIK added or up
    Sep 30, 20244$169M100.000
    Dec 31, 20245$265M100.500
    Mar 31, 20254$174M100.600
    Jun 30, 20254$171M100.700
    Sep 30, 20254$282M100.700
    Dec 31, 20254$207M100.600
    Mar 31, 20264$164M100.300
    Jun 30, 20264$194M100.500

    A look back at today’s portfolio companies, not a record of what the sponsor owned then. Mark is fair value over cost across every position inside the plausible band.

    How to read it
    • A mark is the lender's own fair value over cost for the quarter. Below 90 means the lender carries the loan at a discount of 10 or more on the dollar; it is that lender's valuation, not DFX's.
    • Two lenders on the same facility 10 points apart are valuing the same loan differently; which one is right is not something a schedule of investments says.
    • Non-accrual is read from the BDC's own footnote, never inferred from a mark. PIK is interest the borrower pays in more debt rather than cash.
    • No forecast is made here. DFX does not publish a default or distress prediction for a sponsor.

    Population: portfolio companies matched to a BDC borrower by an identity-graded bridge, on a BDC schedule of investments at Jun 30, 2026, ownership not recorded as exited. Firms whose own BDC lends to the company, and private credit managers, are left out: that is lending, not ownership. Marks, principal and accrual status are the BDCs' own filed figures; the quarter before is Mar 31, 2026.

    Open the full credit outlook

    Placement agents, lenders, advisers and co-investors

    50 relationships
    Placement agents (4)
    • Park Hill Group LLC 4 shared · strong · last Jan 1, 2022
    Financial advisers (30)
    • Paul Giannamore 3 shared · strong · last Jun 30, 2026
    Legal advisers (11)
    • Sidley Austin LLP 4 shared · strong · last Mar 24, 2026

    Placement agents by fund generation

    4 agents, 3 on the 2021 generation
    AgentFundsYearsStrategiesLatest generation
    Evercore Group L.L.C.2vintage 2021Cvon it
    Park Hill Group LLC4vintages 2015 to 2021Capital Partnerson it
    PJT Partners LP2vintage 2021Capital Partnerson it

    From Form ADV Schedule D, which names the placement agents on each private fund an adviser reports, year by year.

    LP commitments

    1 LPs, 1 disclosed commitments

    Events

    4 not already shown above, of 60 most recent
    1. Aug 24, 2026
      8/24/26 Thompson Street Capital Partners Portfolio Company ATIS Acquires AuditMate to Strengthen Its Elevator Asset Management Platform
      Firm newsFactFirm website
    2. Aug 5, 2026
      8/5/26 ATIS Acquires Buckley Belcher to Strengthen Consulting and Managed Services Capabilities
      Firm newsFactFirm website
    3. Jul 9, 2026
      7/9/26 Karpel Appoints Todd Hicks as Chief Executive Officer to Lead Next Phase of Growth
      Firm newsFactFirm website
    4. Jun 30, 2026
      6/30/26 Thompson Street Capital Partners Portfolio Company PestCo Holdings Acquires Arrow Pest Control
      Firm newsFactFirm website
    Across the graphs

    Thompson Street Capital Manager LLC is the same institution as 4 records in Allocators, Independent Sponsors, RIA and Wealth and Private Credit.

    Allocators1Independent Sponsors1RIA and Wealth1Private Credit1

    DFX found 4 relationships across 4 datasets

    Which record it is in each graph, what it is called there, and how the two were matched.

    Includes 3 days of DFX Intelligence. Then $199/month unless canceled.

    Checking your plan…

    Capital chain

    Thompson Street Capital Manager LLC sits on 46 traced paths of capital across the graphs.

    PE sponsor to borrower to facility to lenderAllocator to PE fund to manager to company

    DFX traced 46 paths of capital through this record

    Every record on each path, what it committed or lent, and as of when.

    Includes 3 days of DFX Intelligence. Then $199/month unless canceled.

    Derived from allocator disclosures, BDC schedules and SEC filings; confidence is the weakest hop.

    Checking your plan…

    Fits

    12 scored matches, best firstas of
    • Add-on for a platform
      score 100confidence 60%
      Why: strong candidate; same business; in footprint state
      Why now: add on last 6m; multiple add ons 12m; geographic expansion
    • Add-on for a platform
      score 100confidence 60%
      Why: strong candidate; same business; in footprint state
      Why now: add on last 6m; multiple add ons 12m; geographic expansion
    • Add-on for a platform
      score 100confidence 60%
      Why: strong candidate; same business; in footprint state
      Why now: add on last 6m; multiple add ons 12m; geographic expansion

    +9 more scored matches

    Includes 3 days of DFX Intelligence. Then $199/month unless canceled.

    Scored by DFX match engines from the record's observed portfolio, stage, geography and recent activity. A fit is a reason to look, not a mandate; the blockers say what the model could not confirm. Names and the evidence sentences show with the names on this page.

    Record history

    3 identity changes, 468 dated events on the change ledger, latest event first
    • Merged in
      2026-09-15
    • Merged in
      2026-09-15
    • Merged in
      2026-09-13

    +468 more changes on this record's ledger

    Includes 3 days of DFX Intelligence. Then $199/month unless canceled.

    The ledger records every merge, rename and reclassification this record went through and the dated filings observed on it, so the identity on this page can be traced to the records it was built from. The ledger's own sentences name other records, so they show with the names.